Emerson Rosemount 2051G Manuel utilisateur

Quick Start Guide

00825-0700-4101, Rev AD

May 2019

Rosemount™ 2051G Pressure

Transmitter

with 4-20 mA HART® Protocol (Revision 5

and 7)

Contents

About this guide...........................................................................................................................3

System readiness......................................................................................................................... 5

Mount the transmitter..................................................................................................................6

Set the switches........................................................................................................................... 9

Connect the wiring and power up...............................................................................................10

Verify transmitter configuration.................................................................................................13

Trim the transmitter...................................................................................................................19

Safety instrumented systems..................................................................................................... 22

Product certifications................................................................................................................. 23

Quick Start Guide May 2019

2 Emerson.com/Rosemount

1 About this guide

This guide provides basic guidelines for Rosemount™ 2051G Transmitters. It

does not provide instructions for configuration, diagnostics, maintenance,

service, troubleshooting, Explosion-proof, Flameproof, or intrinsically safe

(I.S.) installations. See the Rosemount 2051G Reference Manual for more

information.

WARNING

Explosions could result in death or serious injury.

Installation of these transmitters in an explosive environment must be in

accordance with the appropriate local, national, and international

standards, codes, and practices. Review the approvals section of the

Rosemount 2051 Reference Manual for any restrictions associated with a

safe installation.

Before connecting a HART-based communicator in an explosive

atmosphere, make sure the instruments in the loop are installed in

accordance with intrinsically safe or non-incendive field wiring practices.

In an explosion-proof/flameproof installation, do not remove the

transmitter covers when power is applied to the unit.

Process leaks could result in death or serious injury.

To avoid process leaks, only use the O-ring designed to seal with the

corresponding flange adapter.

Electrical shock could cause death or serious injury.

Avoid contact with the leads and terminals. High voltage that may be

present on leads can cause electrical shock.

Conduit/cable entries

Unless marked, the conduit/cable entries in the transmitter housing use a

½–14 NPT thread form. Entries marked “M20” are M20 × 1.5 thread form.

On devices with multiple conduit entries, all entries will have the same

thread form. Only use plugs, adapters, glands, or conduit with a

compatible thread form when closing these entries.

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Quick Start Guide 3

WARNING

Physical access

Unauthorized personnel may potentially cause significant damage to

and/or misconfiguration of end users’ equipment. This could be

intentional or unintentional and needs to be protected against.

Physical security is an important part of any security program and

fundamental to protecting your system. Restrict physical access by

unauthorized personnel to protect end users’ assets. This is true for all

systems used within the facility.

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4 Emerson.com/Rosemount

2 System readiness

2.1 Confirm HART Revision capability

•If using HART® based control or asset management systems, confirm the

HART capability of those systems prior to transmitter installation. Not all

systems are capable of communicating with HART Revision 7. This

transmitter can be configured for either HART Revision 5 or 7.

•For instructions on how to change the HART revision of the transmitter,

see Switch HART revision mode.

2.2 Confirm correct device driver

Procedure

1. Verify the latest Device Driver (DD/DTM™) is loaded on your systems

to ensure proper communications.

2. Reference Emerson.com or FieldCommGroup.org for the latest DD.

3. Select desired product and download the DD.

a) Reference Table 2-1 for the correct DD.

Table 2-1: Device Revisions and Files

Identify device Find device driver

files

Review

instructio

Review

functionali

Softwar

e release

date

NAMUR

hardwar

revision(

NAMUR

software

revision(

HART

software

revision(

HART

universa

l revision

Device

revision(

00809-04

00-4101

Changes to

software(4)

June

2016

1.1.xx 1.0.xx 03 7 10 Reference

Manual

(4)

5 9

(1) NAMUR revision is located on the hardware tag of the device. Differences in level 3 changes,

signified above by xx, represent minor product changes as defined per NE53. Compatibility

and functionality are preserved and product can be used interchangeably.

(2) HART software revision can be read using a HART capable configuration tool. Value shown

is minimum revision that could correspond to NAMUR revisions.

(3) Device driver file names use device and DD revision (e.g. 10_01). HART Protocol is designed

to enable legacy device driver revisions to continue to communicate with new HART devices.

To access new functionality, the new device driver must be downloaded. It is recommended

to download new device driver files to ensure full functionality.

(4) HART Revision 5 and 7 selectable, Local Operator Interface (LOI), scaled variable,

configurable alarms, expanded engineering units. Updated electronics hardware design.

Intrinsically Safe temperature classification change.

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Quick Start Guide 5

3 Mount the transmitter

Mount directly to the impulse line without using an additional mounting

bracket or mount directly to a wall, panel, or two-inch pipe using an optional

mounting bracket.

Figure 3-1: Transmitter Direct Mounting

A. Process connection

Note

Do not apply torque directly to the electronics housing. To avoid damage,

apply torque only to the hex-shaped process connection.

Figure 3-2: Panel and Pipe Mounting

Panel mount Pipe mount

3.1 Liquid flow applications

Procedure

1. Place taps to the side of the line.

2. Mount beside or below the taps.

3. Mount the transmitter so the drain/vent valves are oriented upward.

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6 Emerson.com/Rosemount

3.2 Gas flow applications

Procedure

1. Place taps in the top or side of the line.

2. Mount level or above the taps.

3.3 Steam flow applications

Procedure

1. Place taps to the side of the line.

2. Mount beside or below the taps.

3. Fill impulse lines with water.

3.4 Environmental seal for housing

Thread sealing (PTFE) tape or paste on male threads of conduit is required to

provide a water/dust tight conduit seal and meets requirements of NEMA®

Type 4X, IP66, and IP68. Consult factory if other ingress protection ratings

are required.

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Quick Start Guide 7

For M20 threads, install conduit plugs to full thread engagement or until

mechanical resistance is met.

3.5 Gage transmitter orientation

The low side pressure port (atmospheric reference) on the inline gage

transmitter is located in the neck of the transmitter, behind the housing. The

vent path is 360° around the transmitter between the housing and sensor.

(See Figure 3-3).

CAUTION

Keep the vent path free of any obstruction, including but not limited to

paint, dust, and lubrication by mounting the transmitter so the

contaminants can drain away.

Figure 3-3: Gage Low Side Pressure Port

ALow side pressure port (atmospheric reference)

Quick Start Guide May 2019

8 Emerson.com/Rosemount

4 Set the switches

Set alarm and security switch configuration before installation as shown in

Figure 4-1.

•The alarm switch sets the analog output alarm to high or low. Default

alarm is high.

•The security switch allows ( ) or prevents ( ) any configuration of the

transmitter. Default security is off ( ).

Use the following procedure to change the switch configuration:

Procedure

1. If the transmitter is installed, secure the loop, and remove power.

2. Remove the housing cover opposite the field terminal side. Do not

remove the instrument cover in explosive atmospheres when the

circuit is live.

3. Slide the security and alarm switches into the preferred position

using a small screwdriver.

4. Reattach the transmitter cover. The cover must be fully engaged to

comply with explosion-proof requirements.

Figure 4-1: Transmitter Electronics Board

Without LCD display With LOI/LCD display

A. Alarm

B. Security

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Quick Start Guide 9

5 Connect the wiring and power up

CAUTION

Do not tamper with or remove the electronics board in the Rosemount™

2051G. This will cause permanent damage to the transmitter.

Shielded twisted pair cable should be used for best results. Use 24 AWG or

larger wire that does not exceed 5000 ft. (1500 m) in length. If applicable,

install wiring with a drip loop. Arrange the drip loop so the bottom is lower

than the conduit connections and the transmitter housing.

Figure 5-1: Wiring the Transmitter (4–20 mA HART)

AVdc supply

BRL ≥ 250 (necessary for HART® communication only)

CAUTION

Installation of the transient protection terminal block does not provide

transient protection unless the transmitter case is properly grounded.

Do not run signal wiring in conduit or open trays with power wiring, or

near heavy electrical equipment.

Do not connect the powered signal wiring to the test terminals. Power

could damage the test diode in the terminal block.

Use the following steps to wire the transmitter:

Procedure

1. Remove the housing cover on the FIELD TERMINALS side.

Quick Start Guide May 2019

10 Emerson.com/Rosemount

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